Maintenance and Cleaning SMA Solar Technology AG
48 SB33_38-IEN111851 Installation Guide
7. Unlock and unplug the fan plug inside the inverter.
The fan cables are long enough that you can lift the fan far enough out to disconnect the internal
plug connector in the inverter.
8. Remove the fan.
9. Clean the fan with a soft brush, a paint brush, or a damp cloth.
10. After cleaning, assemble everything in reverse order.
11. Check the functioning of the fan as described in the following section.
8.1.2 Checking the Fan
You can check that the fan is working in 2 ways:
• Set the "Fan-Test" parameter to "1" in the installer mode (using Sunny Data Control, Sunny
Explorer or Sunny WebBox).
or
• Plug the provided jumper into the sequential control system board.
Setting Parameters
1. Request the installer password from the SMA Serviceline (contact: see page 73).
2. Set the "Fan-Test" parameter to "1" in the installer mode.
3. Check the air-flow of the fan.
The inverter sucks air in from underneath and then blows it back out on the upper left side. Listen
for any unusual noise that could indicate incorrect installation or that the fan is faulty.
4. After checking the fan, set the "Fan-Test" parameter back to "0".
☑ You have finished checking the fan.
NOTICE!
Damage to the fan through the use of pressurized air.
• Do not use pressurized air to clean the fan. This can damage the fan.
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